研究报告

  • 张静,凡玉娟,赵佳欣,吕欣妍,李娜,施世宇,张亚彩,吴欣源,赵友华,余浩,曹治国.额头皮脂-角质层中有机磷阻燃剂的垂直分布规律及健康风险评估[J].环境科学学报,2022,42(12):432-440

  • 额头皮脂-角质层中有机磷阻燃剂的垂直分布规律及健康风险评估
  • Vertical distribution and health risk assessment of organophosphorus flame retardants in forehead sebum-cuticle
  • 基金项目:国家自然科学基金项目(No. 41977308,42122057,21806030);中原青年拔尖人才(No. ZYYCYU202012168);河南省教育厅高校科技创新人才支持计划 (No. 20HASTIT011)
  • 作者
  • 单位
  • 张静
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 凡玉娟
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 赵佳欣
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 吕欣妍
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 李娜
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 施世宇
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 张亚彩
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 吴欣源
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 赵友华
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 余浩
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 曹治国
  • 河南师范大学环境学院,黄淮水环境与污染防治教育部重点实验室,河南省环境污染控制重点实验室,新乡 453007
  • 摘要:皮脂-角质层是有机磷阻燃剂(OPFRs)从环境进入人体皮肤的桥梁,揭示OPFRs在皮脂-角质层中浓度的垂直分布规律,对于准确评估OPFRs的皮肤暴露剂量有重要意义.本研究选取40名在校大学生为志愿者,基于胶带粘贴技术,分5层采集了志愿者额头皮脂-角质层样品,采用气相色谱-三重四极杆串联质谱仪测定其中9种OPFRs的浓度.结果显示,在校大学生额头5层皮脂-角质层中Σ9OPFRs的总浓度为1320~3650 ng?m-2,平均浓度为2550 ng?m-2.其中TDCIPP含量最高(933 ng?m-2),TPP最低(3.1 ng?m-2);除TPHP男性显著高于女性外(p<0.01),男女额头表面OPFRs负荷无显著性别差异.整体上,9种OPFRs均在表层皮脂中的浓度最高,且随深度增加逐步降低,Σ9OPFRs在5层皮脂-角质层中的浓度变异系数为71%±22%.基于皮脂-角质层第1和第5层中OPFRs浓度估算其皮肤暴露剂量,分别为1.7×10-4 ng?kg-1?d-1和2.3×10-5 ng?kg-1?d-1,存在显著的差异.由此可知,OPFRs在皮脂-角质层中并非均匀分布,基于擦拭法获取皮肤表层皮脂中OPFRs的平均浓度并用于评估OPFRs皮肤暴露剂量,可能显著高估其生物学实际暴露水平.
  • Abstract:Elucidating the vertical distribution of organophosphorus flame retardants (OPFRs) in sebum-cuticle, a bridge for OPFRs to enter human skin from the environment, is of great significance to accurately determine the dermal exposure dose of OPFRs. In this study, 40 college students were recruited as volunteers and sebum-cuticle samples in forehead were collected in five layers by tape stripping technique, and the concentrations of nine kinds of OPFRs were determined by a gas chromatography-triple quadrupole tandem mass spectrometer. The results showed that the total concentration of Σ9OPFRs in the five layers of forehead sebum-cuticle of college students ranged from 1320 to 3650 ng?m-2, with an average concentration of 2550 ng?m-2. TDCIPP content was the highest (933 ng?m-2) and TPP content was the lowest (3.1 ng?m-2). No significant difference in OPFRs concentration on the forehead surface between two genders was observed, except the level of TPHP was significantly higher in samples from males than females (p<0.01). Overall, the concentration of nine OPFRs in the surface sebum was the highest and gradually decreased with the increase of depth. The variation coefficient of Σ9OPFRs concentration in the five layers of sebum-cuticle was 71%±22%. Based on the OPFRs concentration, the dermal exposure doses in the first and fifth layers of sebum-cuticle were estimated to be 1.7×10-4 and 2.3×10-5 ng?kg-1?d-1, respectively, which was significant different, indicating that OPFRs were not uniformly distributed in the sebum-cuticle. The average concentration in the sebum on skin surface obtained by wiping method is used to evaluate the skin exposure dose of OPFRs, which may significantly overestimate the actual biological exposure level of OPFRs.

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